非時變性 的英文怎麼說
中文拼音 [fēishíbiànxìng]
非時變性
英文
timeinvariance-
Animalcule fermentation process possesses non - linear and time difference, it is inherence mechanism is very complex, some important course variable ca n ' t measure online
微生物發酵過程具高度的非線性和時變性，其內在機理非常復雜。一些重要的過程變量不能在線測量。In this thesis, according to changeable quantity, nonlinear and time - varying of the copperplate rolling process, the simple fuzzy controller was first designed based on the analysis of the fuzzy control theory, which is the basis of other high - level controllers
本文針對銅板軋制過程具有多變量、非線性、時變性的特點，在分析了模糊控制基本理論的基礎上，首先設計了銅板軋制簡單模糊控制器，這也是進一步設計其它高性能模糊控制器的基礎。Hydro - turbine governing system is a nonlinear and time mutative system that is usually conducted following analysis and calculations : calculation of regulation guarantee under transiting process of acute fluctuation ; dynamic analysis under small fluctuation
水輪機調節系統是非線性和時變性的系統，其分析計算分為:大波動過渡過程下的調節保證計算;小波動情況下的動態分析。The wastewater treatment system is one dynamic system of indeterminacy, time - variance, nonlinearity and posteriority. so it is difficult to create a precise mathematical model
城鎮污水處理系統是一個具有不確定性、時變性、非線性、滯后性的動態系統，難于建立起精確的數學模型。Electric arc furnace ( efa ) system is a complex plant, which exits serious non - linearity, time changing, strong couple. the constant impedance control method, which base on classical control theory has been used widely
電弧爐系統是一個具有較強非線性、時變性和強耦合的被控對象，目前普遍採用的是基於經典控制理論的恆阻抗控制方式。Now, the activated sludge process, a kind of wastewater treatment with complicated mechanism, non - linear and varying, has been extensively utilized in the industrial and municipal wastewater treatment
目前最常用的污水處理途徑是活性污泥法。它是一種水體自凈的人工強化方法，具有機理復雜、非線性、時變性大的特點。This dissertation majorly researchs and designs full digital dc driving system with fuzzy control. it makes a scheme argumentation firstly, analyzing the pid algorithm and fuzzy control algorithm the ordinary digital pulse trigger algorithm and the double remainder method of pulse trigger in detail, and fuzzy control and the double remainder method are put forward to settle the under - mentioned problems, namely, the new viewpoint and the task having finished in this dissertation as follows : ( 1 ) in rder to overcome the influence of dc motor ' s parameter changing with time and nonlinear on the control system performance, this dissertation adopts fuzzy control as outside regulator and pi control as inside regulator in double regulators of the full digital dc motor driving system design ;. ( 2 ) aiming at the pulse trigger reliability of the ordinary d igital pulse trigger being low and leaking the pulse or the order of pulse confusion, this paper adopts the double remainder algorithm with short response time high pulse trigger reliability good adaptability and anti - jamming ; ( 3 ) this dissertation adopts tms320lf2407 which has good performance as major control chip this chip has power function with fast calculation capability, and accomplishes the software and hardware design in the dc motor driving system with fuzzy control ; ( 4 ) this dissertation also puts emphases on anti - jamming in hardware and software ; ( 5 ) after having designed the sample of full digital dc motor driving system with fuzzy control, a lot of experiments are performed to verify the performance and settles problems during experiment. the result of experiment proves the feasibility of design
首先進行了方案論證，對模糊控制演算法和數字pid調節演算法、觸發脈沖的一般演算法和雙余演算法進行了詳細地研究分析，提出應用模糊控制和雙余法解決下述問題，即該論文主要的新見解和所完成的工作： （ 1 ）為了克服直流電機參數時變性和非線性因素對控制性能的影響，本設計中，雙閉環調速系統的外環採用模糊控制，內環採用pi控制，使系統在一定范圍內對直流電機參數變化和非線性因素影響有自適應能力； （ 2 ）針對常規數字觸發器演算法中觸發脈沖的可靠性不高，經常出現漏脈沖或是脈沖混亂的情況，本文採用雙余法，該演算法具有響應快，可靠性高，具有良好的適應性及抗干擾能力； （ 3 ）本設計中採用了速度快、功能強的tms320lf2407作為系統的主控晶元，應用該晶元完成系統的軟硬體設計： （ 4 ）本文對系統抗干擾的軟硬體措施進行了重點研究； （ 5 ）設計了具有模糊控制的全數字直流傳動系統原理樣機，並進行了試驗驗證，對試驗過程中出現的問題及時解決，最終實驗結果證明設計是可行的。The future wireless mobile communication systems are expected to provide ubiquitous, high - quality, and high - rate mobile multimedia transmission. however, hostile multipath fading radio conditions give rise to serious inter - symbol interference ( isi ) ; even worse, wireless channel are often time varying, which makes the system more vulnerable and more difficult to track the channel state. orthogonal frequency dvision multiplexing ( ofdm ), which is inherently resistant against isi, has invoked a popular research interest in recent years, and has been a promising candidate technology of the physical layer for future weideband high - date - rate wireless communications. notwithstanding, ofdm is much more vulnerable to errors of both time and frequency synchronization and to that of channel estimation, and how to obtain correct timing and channel estimation efficiently is highly critical to ofdm systems. the dissertation will focus on both of the aspects of ofdm systems mentioned above
但是無線環境的多徑特性造成通信系統中嚴重的符號間干擾，同時無線通道的時變性使得通道特性跟蹤復雜。而正交頻分復用技術（ orthogonalfrequencydivisionmultiplexing ， ofdm ）正是一種解決符號間干擾的有效傳輸手段，因此ofdm技術作為未來寬帶高速率無線通信的物理層候選技術在當前引起了一股研究熱潮。但ofdm系統對定時同步誤差和通道估計誤差非常敏感，如何在ofdm系統中準確快速地實現符號同步和通道估計是至關重要的，本論文將重點針對這兩個問題進行討論。The data increases severely in which a lot of targets in fact are so complicated and uncertain to modeling or very difficult accurate modeling, and this proposes the new direction of the research of short - term sale forecasting technology
許多對象具有復雜的不確定性和時變性，給預測及提高預測精度等方面帶來了一定的難度，短期銷售額預測分析是一個不規則的、復雜的非線性系統，因此對短期銷售預測方法的要求更高。Copper matte converting system is a complicated process which has the characteristics of multivariable, nonlinearity, strong coupling, large inertia, time varying and uncertainty and very difficult to carry out real - time on - line control. the purpose of the optimization, decision - making and control of copper matte converting process is to improve the productivity and decrease energy consumption
銅鋶吹煉過程是一類具有多變量、非線性、強耦合、大慣性、時變性和不確定性、難以實時在線控制等特點的復雜對象，銅鋶吹煉過程優化決策與控制的目的是為了提高勞動生產率，實現優質高產和降低能源消耗。Because return of chinese security market is non - normal distribution, so we use garch - t model which can describe the time - variation of volatility and the high - peaked and heavy - tailed characteristics of return to calculate var value of market index. from empirical results we know that this model is efficient
考慮到中國證券市場收益率序列分佈的非正態性，本文使用了既能描述方差時變性又能反映收益率分佈的尖峰、厚尾特徵的garch - t模型計算市場指數的var值，實證結果表明該模型是有效的。Systems are lumped, time-invariant, or linear if all their elements have these properties.
如果一個系統的所有元素都有集總的，非時變的或線性的性質，則該系統是集總的，非時變的，或線性的。Based on advanced technology, this thesis bring forward the optimal scheme and set down general system - drawings and flow charts. using step7 - micro software, we achieve the auto - control aim in drinking water treatment. in practice, the complexity and non - linaerity exit in the system of water treatment, so we apply fuzzy control in water treatment and design a kind of controller which structure can be altered according to the using - rate of ozone and the variety of water quality
實際飲用水處理系統由於存在復雜性、非線性、時變性，本文根據臭氧生物活性炭水處理工藝存在復雜性、非線性、時變性等特點，將模糊控制應用在水處理這一不確定的非線性時變系統，針對不同水溫下臭氧利用率及水質的變化，設計一種基於系統過程狀態的變結構的模糊控制器，以單片機作為主要控制硬體，按查表方式設計軟體，對進水閥門開度進行在線控制，調節臭氧氣體與進水的比例（臭氧流量及濃度不變） ，達到氣水比最優化。First, we examine whether the momentum strategies and contrarian strategies can create significant profits under different formulation horizons and holding horizons, whether past factors ( market return, characteristic of individual stock ) can provide an important implication about the profits of momentum and contrarian strategies. second, we discuss the reasons for the significant profits of momentum or contrarian strategies, including seasonality, cross - sectional risk factors, time - varying risk premium, industry momentum, and stock underreaction, overreaction, and random walk. third, we discuss the link of time series predictability of stock returns and momentum profits, including stock underreation, overreaction, delayed reaction, and time - varying risk premium
研究目的有四：其一，探討中國股市執行慣性策略或反向策略的顯著獲利模式及與各狀態因子（市場及個股狀態）的關系；其二，全面分析中國股市慣性與反向效應之潛在成因，包括截面風險因素、季節因素、時變的風險溢價、行業慣性效應以及行為金融模型與conradandkaul （ 1998 ）的隨機遊走觀點之爭論；其三，構建非效率市場之股票價格運動方程，並基於此，規范地演進慣性效應之時序生成途徑，包括反應不足、過度反應、滯后反應以及風險溢價的時變性；其四，探討中國股市中投資者的特殊信息反應模式，並以此來解讀中國股市的中短期過度反應與反應不足的現象，以及個股間的超前一滯后關系的表現模式及形成機理。There are lots of non - linear systems in the nature. because classical and morden control methods have common limitation : mathematical model of the plant has to be known in advance. but in fact many plants are intricate uncentaintied and time - varying. in addition, they also are non - linear. though there are methods of system identification in control theories, the identification theories and ways of non - linear and time - varying system are not mature and systematic. it is very difficult to carry out effective real - time control. the neural networks can approximate random non - linear relations and study by itself, and it provides new thoughts and new ways for solving these problems
由於經典和現代控制方法存在一個共同的局限性：就是要求預先知道被控對象的數學模型，但實際上許多對象具有復雜的不確定性和時變性；此外還具有復雜的非線性。雖然在控制理論中有系統辨識的手段，但是對于非線性時變系統尚無成熟的和系統的辨識理論與方法，要實行有效的實時控制就很難了。人工神經元網路有表示任意非線性關系和自學習等能力，給解決這些問題提供了新思想和新方法。To carry out further optimizing and control strategy, more information must be gained first. however, the process will face many problems when being measured. nowadays, only those parameters such as physical and chemical parameters can be measured on - line, and other parameters, such as bio - parameters which are more complex and important, can not be measured yet
發酵過程具有強非線性、時變性和相關性，要實現對發酵過程的進一步優化和控制，必須獲得足夠的發酵過程信息，但是目前發酵過程被測量參數僅局限於某些物理、化學參數，而對于較為復雜的生物參數，也是最關鍵的參數的在線測量，目前還沒有較為成熟的技術可運用，採用軟測量技術是解決此問題的出路之一。As for the system is complicated, non - linear and time - changing, how to design every element suitably to acquire the best control effects has important theory significance and practical value. the paper introduces the new universal digital trigger based on cpld and pll
可控整流電源系統具有復雜性、非線性、時變性等特點，如何合理地設計其各個控制環節以達到最優的控制效果具有一定的理論意義和重要的實用價值。A humanoid - like response service robot system is highly non - linear and its parameter varies with time. its assignment is complex and its environment is unknown
具有類人反應的服務機器人系統，具有高度的非線性和參數的時變性，及任務的復雜性，且環境未知。Because of the nonlinear, time - variability and uncertainty of the submerged - arc welding progress, the characteristic of accurate mathematic model being hard to establish, we can adopt the fuzzy control technology to design the welding dolly control system, and the couple closed - loop fuzzy control velocity system and fuzzy control algorithm for the speed of the welding dolly are researched based on the control system of submerged ? arc welding
同時長時間工作也容易使人產生疲勞，影響焊接質量。針對埋弧焊過程的非線性、時變性和不確定性，難以建立精確的數學模型等特點，採用模糊控制來設計焊接小車控制系統，同時研究了焊接小車雙閉環模糊調速系統，並針對焊接小車速度的雙閉環模糊控制演算法進行討論。Abstract : many factors affecting laminal airtight vessel life have, this complex ， uncertain and changeable characteristics method of dynamic two - grade fuzzy comprehensive decision is introduced to estimate the vessel life, the mathematical model and process of the decision are established
文摘:針對影響薄壁密封容器壽命的許多因素具有復雜性、非確定性以及時變性的特點，提出了用動態二級模糊綜合評判的方法對其壽命進行評估，建立了評估的數學模型和評估流程。分享友人